perfsonar development work

["Nina Jeliazkova" <>]

Hello all,

Thanks everybody for the comments. So far it seems most reasonably to stay
with Java 5.0 for compatibility reasons. Independent to the Java version
selected, plugins should have build file different from the main one. 

Best regards,
Nina

Uros( Juvan 
<>
 wrote:

> It is simple. Class version number is newer when produced by Java 6. As
> you already know, there is no problem with Java 6 running classes
> produced by Java 5.
> 
> However there are problems when classes produced by Java 6 are ran in
> Java 5 environment.
> 
> Unless of course if you add very important flag to either javac command
> line compiler or ant javac target:
> 
> 1. javac command line option example:
>    $ javac -target 1.5 SomeClass.java
> 
> 2. ant javac target:
>    ...
>    <javac srcdir="someDir" destdir="someDir" target="1.5">
>        <classpath refid="someId" />
>    </javac>
>    ...
> 
> You should be able to run resulted class using either Java 5 or Java 6 RE.
> 
> Tsompanidis Ilias wrote:
> > Hello Rolland, all,
> > we have had some problems while the developers were using java 6 to
> > compile everything, and with users using java 5.
> > Everything worked OK when the developers used java 5. (and worked OK on
> > machines with java 6)
> > So in means of backwards compatibility (and cross platform compatibility
> > - for example there is no official update to java 6 for macs), I would
> > propose sticking with java 5, unless necessary ;)
> > 
> > Greets,
> > Ilias
> > 
> > Roland Karch wrote:
> >> At 09:37 05.06.2007, Nina Jeliazkova wrote:
> >>> I think the best is to get user and developers feedback on this issue.
> >>>
> >>> Currently perfsonarUI compiles under Java 5.0 and higher. Gijs
> >>> submitted some
> >>> plugin UI code which needs Java 6.0. So far the options for
> >>> perfsonarUI are:
> >>>
> >>> - Upgrade to Java 6.0 and abandon 5.0 support;
> >>> - Stay with Java 5.0 for now and provide different build file for the
> >>> plugins;
> >>> - Force all plugins to use same version (Java 5.0 currently);
> >>> - Anything else?
> >>
> >> For the BWCTL plugin, my Java development environment is currently
> >> version 5. I really have no idea about the implications of upgrading
> >> to 6. I'd assume it just requires a download from SUN and then to
> >> recompile everything. If so, it would be nothing more than a minor
> >> inconvenience since Java 5 is already bundled with Debian, and I'd
> >> have to maintain an installation on my own if I were to upgrade.
> >>
> >> A different build file for plugins might be a good idea though, I
> >> really don't like my current hack of just adding the build
> >> instructions to the main PerfsonarUI build file.
> >>
> >> Greetings,
> >> Roland
> >>
> >> -- 
> >>
> >> Roland Karch
> >> DFN-Labor
> >>
> >> Friedrich-Alexander-Universität Erlangen-Nürnberg
> >> Regionales RechenZentrum Erlangen (RRZE)
> >> Martensstrasse 1
> >> 91058 Erlangen
> >> Germany
> >>
> >> Tel.:   +49 9131 85-27806, -28800
> >> Fax:    +49 9131 302941
> >>
> >> 
> >> <mailto:>
> >> www.rrze.uni-erlangen.de
> >> <http://www.rrze.uni-erlangen.de/> www-win.rrze.uni-erlangen.de
> >> <http://www-win.rrze.uni-erlangen.de/>
> >>
> 
> Regards,